Acupressure and Prevention of Nausea and Vomiting During and After Spinal Anaesthesia for Caesarean Section D. Harmon, M. Ryan, A. Kelly, and M. Bowen British Journal of Anaesthesia 2000; 84 (4); pp 463-467.Conclusion: The use of acupressure reduced the incidence of nausea or vomiting from 53% to 23% compared with placebo during the operation and from 66% to 36% compared with placebo after the operation.